According to my experience on information technology, I can say that based on the information provided within the question the term being mentioned is called Parallel Conversion. Like mentioned in the question this term refers to when two systems run at the same time while transferring operations in order to make sure that everything is running correctly and are outputting the same results.
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Waveform Audio (.wav) is a common file format. Created by Microsoft and IBM, WAV was one of the first audio file types developed for the PC. WAV files are defined as lossless, meaning that files are large and complete; nothing has been lost.
